What it means
The monthly close is the set of steps that turns a month of recorded transactions into finished books. During the month, bills, payments and sales get entered as they happen. The close is where someone checks it all against outside records, adds what's missing, reviews the result and declares the month done.
A closed month has numbers you can send to a board, a lender or an investor and stand behind.
Most closes follow the same order. Reconcile every bank, card and processor account. Book the adjusting entries, such as accruals for costs incurred but not yet billed, prepaid amortization, depreciation and deferred revenue earned. Tie each balance-sheet account to its support. Then produce the statements, review them for swings nobody can explain, sign off and lock the period.
A checklist keeps that order the same every month, and schedules stop recurring entries from being booked from memory.
Acme's employees earn $15,000 of gross wages for March 25–31, paid on April 3. Closing March, Acme accrues the $15,000 as salaries expense and accrued payroll, so March's P&L carries every day of March's wages.
When payroll runs on April 3, the payment clears the accrued payroll instead of hitting expense again. Some teams set the accrual to reverse automatically on April 1, which gets the same result. Either way, each month carries its own wages.
Reconciliation, lead schedules and period locks are all steps inside the close, and the P&L, balance sheet and cash flow statement are its output. A raise, a 409A or a CPA review all start from closed months.
Why it matters. A closed month is one you can hand to anyone. Close every month and a raise, a 409A or an audit starts from finished books instead of a cleanup project.
The entry, worked
Acme's gross wages for March 25–31 total $15,000, paid on April 3. Closing March, Acme accrues them.
| Account | Debit | Credit |
|---|---|---|
| Salaries expense | $15,000.00 | |
| Accrued payroll | $15,000.00 | |
| Total | $15,000.00 | $15,000.00 |
March carries the wages its employees earned in March, even though the cash goes out in April.
Common questions
How long should a monthly close take?
It depends on volume and tooling. Aim for a predictable close where the same checks happen in the same order every month.
Do I need to close monthly if I only report quarterly?
It isn't required, but monthly closes keep errors small and recent. A quarter of unreconciled accounts is much harder to untangle than a month.
What's the difference between a soft close and a hard close?
A soft close skips some steps, such as estimating instead of fully reconciling, to get directional numbers fast. A hard close does every step and locks the period. Anything you send outside the company should come from a hard close.
Where it comes up
The glossary entries, founder guides and lessons on this site that use the term and link here.
- CloseThe process of finalizing a periodGlossary
- Why startups should close their books every monthA monthly close turns a bank balance into numbers an investor, an auditor or a 409A firm will accept. What it is, and why it gets expensive to skip.Guide · 4 min
- How sales tax is calculated: rates, sourcing, roundingHow sales tax is calculated: state plus local rates, origin vs destination sourcing, what’s taxable (SaaS varies) and rounding per line or per invoice.Guide · 6 min
- Form 1120: what to give your tax preparer, and whenWhat a startup hands its tax preparer for Form 1120: closed books, a balance sheet that ties to Schedule L, book-to-tax items, ownership and 1099s.Guide · 5 min
- How to read an income statement (P&L)Revenue, cost of revenue, gross margin, operating expenses and net income, read line by line, on accrual basis, with the mistakes founders make most.Guide · 7 min
- Balance sheet explained for startupsAssets equal liabilities plus equity. What each startup line means, from deferred revenue to the SAFE and the accumulated deficit, and why it must balance.Guide · 7 min
- Bank reconciliation step by stepMatch the bank statement to the books, clear deposits in transit and outstanding checks, book the fees, and reach a $0.00 difference every month.Guide · 6 min
- MRR vs GAAP revenue under ASC 606MRR and ARR are operating metrics; revenue under ASC 606 is earned over time. How annual prepayments and churn split them, and how to reconcile the two.Guide · 6 min
- Company cards and receipts: coding, matching, reconcilingCompany cards without the month-end receipt chase: how to code card spend, match receipts, handle missing ones and reconcile the card to its statement.Guide · 6 min
- Employee expense reimbursements and accountable plansHow to reimburse employees tax-free under an IRS accountable plan: business purpose, timely receipts, excess returned, mileage and sales tax on receipts.Guide · 6 min
- Accrued expenses vs accounts payable: the differenceAP is a bill you’ve received; an accrued expense is a cost incurred before the bill arrives. When to accrue, and how reversing entries work, by example.Guide · 5 min
- Closing the monthStatements are not the end. The close proves every balance against something outside the ledger, then locks the period so the numbers can't quietly change.Lesson 13
Read further
General information for US companies, not tax, legal or accounting advice. Check the specifics with a CPA before you act on them.